Home / 717,385.95-990,037.37-395,095.96

Finding the Fourth Proportional to 717,385.95, 990,037.37 and 395,095.96

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Solution

The fourth proportional to 717,385.95, 990,037.37 and 395,095.96 is: 545,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,385.95 : 990,037.37 = 395,095.96 : x
  2. Step 2: Convert to fraction form
    717,385.95/990,037.37 = 395,095.96/x
  3. Step 3: Cross multiply
    717,385.95x = 990,037.37 × 395,095.96
  4. Step 4: Simplify right side
    717,385.95x = 391,159,767,361.31
  5. Step 5: Solve for x
    x = 391,159,767,361.31/717,385.95
  6. Step 6: Final answer
    x = 545,257.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.